Tom Lane schrieb:
What's the platform exactly (hardware and OS)?

Hardware: - SCSI version, 2 x 146GB 10k rpm disks in software RAID-1 - 32GB RAM

OS: Linux 2.6.10-rc3, x86_64, debian GNU/Linux distribution

- CONFIG_K8_NUMA is currently turned off (no change, but now all CPUs have ~25% load, previously one was 100% busy and the others idle)

- CONFIG_GART_IOMMU=y (but no change, tried both settings)
[other kernel options didn't seem to be relevant for tweaking at the moment, mostly they're "safe defaults"]

The PostgreSQL data directory is on an ext2 filesystem.

Dipl.-Ing. Marinos Yannikos, CEO
Preisvergleich Internet Services AG
Obere Donaustrasse 63, A-1020 Wien
Tel./Fax: (+431) 5811609-52/-55

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